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WHAT IS PI? It is long time since PI was introduced, William Jones introduced it in 1706, and we know that we use PI to find areas and circumference of any Circular object. The symbol of PI which is “π” was popularized by Leonhard Euler in 1737. But what is that PI? And how was it obtained? |
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COMPLEX NUMBERS
The number in the form of a + ib where a and b are real numbers and i = √-1 is called the complex number The square root of negative number (√-a) is called the imaginary number, for example √-1, √-5, √-16 etc all are imaginary numbers. |
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High School level |
Views: 548 |
Author: Yahya Mohamed (Badshah) |
Added by: Admin |
Date: 08/Apr/2017
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AREAS AND CIRCUMFERENCE OF CIRCLES
Before we start, let’s Note on the use of PI (π) We understand that PI can be expressed as 3.14 or 22/7
We shall use PI 22/7 if we find that the radius or Diameter is easily Divisible by 7 such as 7, 14, 21, 28, 42, 2.1, 3.5, 1.4 and the like. Any other dimension which is not divisible by 7 such as 3, 4, 12, 10 and the like, we use PI 3.14. |
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Upper Primary |
Views: 760 |
Author: Yahya Mohamed (Badshah) |
Added by: Admin |
Date: 07/Apr/2017
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